A patient on beta-blocker therapy experiences anaphylaxis. The initial dose of epinephrine fails to improve symptoms. This resistance occurs because beta-blockers:
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A
Inactivate epinephrine by enzymatic degradation
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B
Block the beta-2 adrenergic bronchodilation effect of epinephrine
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C
Prevent epinephrine absorption from the injection site
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D
Increase histamine release from mast cells